Of course, we'd have to teach Spot the difference between regular Subaru Forester oil filters and top quality K&N Performance Gold Subaru Forester oil filters. However, since these Subaru Forester oil filters have so many great features, distinguishing them from garden variety filters is no problem. Each K&N Forester oil filter has a nut welded on top for easy installation. They are built with an extra thick canister for added protection against road hazards and blowout. And, with their advanced cellulose and phenolic resin filter matrix, they are perfect for modern long life motor oils. Click over and see for yourself.